THEODORE F. LAVINE

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The preparation and some of the properties of the disulfoxide of I-cystine have been described in a previous paper (1). Despite its intermediate level of oxidation, which is suggestive of chemical instability, the disulfoxide was shown to be relatively stable, especially in aqueous acid solution, a property which was utilized in its separation from other(More)
The classical procedure for the preparation of homocystine consists of boiling a solution of methionine in 50 per cent sulfuric acid followed by neutralization (1). Although the yields of homocystine account for only 25 to 45 per cent of the methionine, the nature of the reaction has received little attention since originally published by Butz and du(More)
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